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How is the java memory pool divided?
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Despite lots of upvotes, it's not so meaningful answer, actually. For example, what does "objects that have survived the garbage collection of the Eden space" mean? Are these objects moved to Survivor Space from Eden after surviving, or their space in Eden is co...
How can I split up a Git commit buried in history?
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Notice how the @ there is now on the commit you want to split – that means HEAD is now at that commit:
We want to move HEAD to the parent, so navigate to the parent (47e18b3) and hit x (magit-reset-quickly, bound to o if you're using evil-magit) and enter to say "yes I meant commit at point...
Adding options to select with javascript
I want this javascript to create options from 12 to 100 in a select with id="mainSelect", because I do not want to create all of the option tags manually. Can you give me some pointers? Thanks
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Max parallel http connections in a browser?
...sleading. Host and domain are completely different. ConnectionsPerHostname means per subdomain. So if there are 2 sub domains it uses additional connections.if no subdomain then it means per domain.
– Don Dilanga
Oct 6 '17 at 19:32
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How to calculate the difference between two dates using PHP?
...he exception that it doesn't take daylight savings time into account. That means that it's off by an hour at most, but except for that it should be correct.
<?php
/**
* Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
* implementation by Derick Re...
pandas GroupBy columns with NaN (missing) values
...lna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github issue - which uses the same placeholder hack).
However, as described in another answer, from pandas 1.1 you have...
Get controller and action name from within controller?
... precise - the controller and action that generated the view (and the user id of course, but that's not the point here).
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What does AngularJS do better than jQuery? [closed]
... to you in this "augmented" HTML that angular allows you to use. This also means that ALL of your view logic is truly contained in the view, not in your javascript files. Again, the reasoning is that the directives written in your javascript files could be considered to be increasing the capability ...
How can I quantify difference between two images?
...distance between two consecutive frames is measured. If it is too high, it means that the second frame is corrupted and thus the image is eliminated. The Kullback–Leibler distance, or mutual entropy, on the histograms of the two frames:
where p and q are the histograms of the frames is ...
What is uintptr_t data type
...d integer type that is capable of storing a data pointer. Which typically means that it's the same size as a pointer.
It is optionally defined in C++11 and later standards.
A common reason to want an integer type that can hold an architecture's pointer type is to perform integer-specific operatio...